2014 MERCEDES-BENZ S-Class key battery

Problems with the rear window defroster
Problem Possible causes/consequences and
0050
0050Solutions The rear window
defroster has
deactivated
prematurely or cannot
be activated. The battery has not been sufficiently charged.
X
Switch off any consumers that are not required, e.g. reading
lamps, interior lighting or the seat heating.
When the battery is sufficiently charged, the rear window
defroster can be activated again. Activating/deactivating air-
recirculation mode
General notes You can also temporarily deactivate the flow
of fresh air manually if unpleasant odors are
entering the vehicle from outside. The air
already inside the vehicle will then be
recirculated.
If you switch on air-recirculation mode, the
windows can fog up more quickly, in
particular at low temperatures. Only use air-
recirculation mode briefly to prevent the
windows from fogging up.
Activating/deactivating X
Turn the SmartKey to position 2in the
ignition lock (Y page 171).
X To activate: press the0072rocker switch
up or down.
The indicator lamp in the 0072rocker
switch lights up.
i Air-recirculation mode is automatically
activated at high levels of pollution or at
high outside temperatures. The indicator
lamp in the 0072rocker switch is not lit
when automatic air-recirculation mode is
activated.
Outside air is added after about
30 minutes.
X To deactivate: press the0072rocker
switch up or down.
The indicator lamp in the 0072rocker
switch goes out. i
Air-recirculation mode deactivates
automatically:
R after approximately five minutes at
outside temperatures below
approximately 41 ‡ (5 †)
R after approximately five minutes if
cooling with air dehumidification is
deactivated
R after approximately 30 minutes at
outside temperatures above
approximately 41 ‡(5 †) if the "Cooling
with air dehumidification" function is
activated Activating/deactivating the residual
heat function
General notes Vehicles with rear-compartment climate
control:
once the engine is switched off, it is
possible to make use of the residual heat of
the engine to continue heating or ventilating
the rear and front compartment of the vehicle
for approximately 15 minutes. If the "Residual
heat" function is set for only the front or only
the rear compartment, it is possible to
continue heating or ventilating for
approximately 30 minutes.
Vehicles without rear-compartment
climate control: once the engine is switched
off, it is possible to make use of the residual
heat of the engine to continue heating or
ventilating the front compartment of the
vehicle for approximately 30 minutes. Operating the climate control systems
163Climate control

The heating or ventilation time depends on
the temperature that has been set.
Front control panel X
Turn the SmartKey to position 0in the
ignition lock or remove it (Y page 171).
X To activate: press the004Brocker switch
up or down.
The indicator lamp in the 004Brocker
switch lights up.
X To deactivate: press the004Brocker
switch up or down.
The indicator lamp in the 004Brocker
switch goes out.
i The blower will run at a low speed
regardless of the airflow setting.
i If you activate the residual heat function
at high temperatures, only the ventilation
will be activated. The blower runs at
medium speed.
Rear control panel X
Turn the SmartKey to position 0in the
ignition lock or remove it (Y page 171).
REST appears in the rear compartment
display.
X To activate: press rocker switch 0074up or
down (Y page 153).
The indicator lamp in rocker switch 0074
lights up.
X To deactivate: press rocker switch 0074up
or down (Y page 153).
The indicator lamp in rocker switch 0074goes
out. REST goes out on the rear
compartment display.
i If you do not activate the residual heat
function, REST goes out automatically after
five minutes on the rear compartment
display. Residual heat is deactivated automatically:
R
after approximately 30 minutes if the
residual heat function is activated in the
front or rear compartment
R after approximately 15 minutes if the
residual heat function is activated in the
front and rear compartments
R when the ignition is switched on
R if the battery voltage drops Perfume atomizer
Operating the perfume atomizer G
WARNING
If children open the perfume vial, they could
drink the perfume or it could come into
contact with their eyes. There is a risk of
injury. Do not leave children unsupervised in
the vehicle.
If the perfume liquid has been drunk, consult
a doctor. If perfume comes into contact with
your eyes or skin, rinse the eyes with clean
water. If you continue to experience
difficulties, consult a doctor. 0043
Perfume lid
0044 Perfume vial
The perfume atomizer helps to improve
driving comfort.
Using COMAND, you can:
R switch the perfume atomizer on and off
R regulate the perfume intensity
See the separate operating instructions. 164
Operating the climate control systemsClimate control

Problems with the engine
Problem Possible causes/consequences and
0050
0050Solutions The engine does not
start. The starter motor
can be heard. R
There is a malfunction in the engine electronics.
R There is a malfunction in the fuel supply.
X Before attempting to start the engine again, turn the SmartKey
in the ignition back to position 0or press the Start/Stop button
repeatedly until all indicator lamps in the instrument cluster go
out.
X Try to start the engine again (Y page 173). Avoid excessively
long and frequent attempts to start the engine as these will drain
the battery.
If the engine does not start after several attempts:
X Consult a qualified specialist workshop. The engine does not
start. You cannot hear
the starter motor. The on-board voltage is too low because the battery is too weak
or discharged.
X
Jump-start the vehicle (Y page 373).
If the engine does not start despite attempts to jump-start it:
X Consult a qualified specialist workshop. The starter motor was exposed to a thermal load that was too high.
X
Try to start the engine again.
If the engine still does not start:
X Consult a qualified specialist workshop. The engine is not
running smoothly and
is misfiring. There is a malfunction in the engine electronics or in a mechanical
component of the engine management system.
X
Only depress the accelerator pedal slightly.
Otherwise, non-combusted fuel may get into the catalytic
converter and damage it.
X Have the cause rectified immediately at a qualified specialist
workshop. The coolant
temperature gauge
shows a value above
248 ‡ (120 †). The coolant level is too low. The coolant is too hot and the engine
is no longer being cooled sufficiently.
X Stop as soon as possible and allow the engine and the coolant
to cool down.
X Check the coolant level (Y page 351). Observe the warning
notes as you do so and add coolant if necessary. 178
DrivingDriving and parking

Problems with fuel and the fuel tank
Problem Possible causes/consequences and
0050
0050Solutions Fuel is leaking from the
vehicle.
G
WARNING
The fuel line or the fuel tank is faulty.
Risk of explosion or fire.
X Apply the electric parking brake.
X Shift the transmission to position P.
X Press the Start/Stop button.
The engine stops and all the indicator lamps in the instrument
cluster go out.
i When the driver's door is open, this corresponds to key
position 0: "Key removed".
X Do not restart the engine under any circumstances.
X Consult a qualified specialist workshop. The fuel filler flap
cannot be opened. The fuel filler flap is not unlocked.
or
The SmartKey battery is discharged.
X
Unlock the vehicle (Y page 85).
or
X Unlock the vehicle using the mechanical key (Y page 86).The fuel filler flap is unlocked, but the opening mechanism is
jammed.
X
Consult a qualified specialist workshop. Parking
Important safety notes
G
WARNING
Flammable material such as leaves, grass or
twigs may ignite if they come into contact with
hot parts of the exhaust system or exhaust
gas flow. There is a risk of fire.
Park the vehicle so that no flammable
materials come into contact with parts of the
vehicle which are hot. Take particular care not
to park on dry grassland or harvested grain
fields. G
WARNING
If you leave children unsupervised in the
vehicle, they could set it in motion by, for
example:
R release the parking brake.
R shift the automatic transmission out of the
parking position P.
R start the engine.
In addition, they may operate vehicle
equipment and become trapped. There is a
risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle. 190
ParkingDriving and parking

Display messages Possible causes/consequences and
0050
0050Solutions Phone No Service
Phone No Service Your vehicle is outside the network provider's transmitter/
receiver range.
X
Wait until the mobile phone operational readiness symbol
appears in the multifunction display. 00B2
Check Washer Fluid Check Washer Fluid The washer fluid level in the washer fluid reservoir has dropped
below the minimum.
X
Add washer fluid ( Ypage 351). SmartKey
Display messages Possible causes/consequences and
0050 0050Solutions 00AF
Key Does Not Key Does Not
Belong to Vehicle Belong to Vehicle You have put the wrong SmartKey in the ignition lock.
X
Use the correct SmartKey. 00AF
Take Take
Your
YourKey
Keyfrom
from
Ignition
Ignition The SmartKey is in the ignition lock.
X
Remove the SmartKey. 00AF
Obtain a New Key Obtain a New Key The SmartKey needs to be replaced.
X
Visit a qualified specialist workshop. 00AF
Replace Replace
Key
KeyBattery
Battery The SmartKey batteries are discharged.
X
Change the batteries ( Ypage 87). 00AF
Don't Forget Your Don't Forget Your
Key Key The SmartKey is not in the ignition lock. You have opened the
driver's door with the engine switched off.
This display message is displayed for a maximum of 60 seconds
and is simply a reminder.
X
Take the SmartKey with you when you leave the vehicle. 00AF
Key Not Detected Key Not Detected
(white display
message) The SmartKey is currently undetected.
X
Change the location of the SmartKey in the vehicle.
If the SmartKey still cannot be detected:
X Insert the SmartKey into the ignition lock and turn it to the
desired position. 300
Display
messagesOn-board computer and displays

Vehicles with individual seats in the rear
X
Press lid 0043of the socket compartment
briefly.
The socket compartment opens.
X Press in cigarette lighter 0044.
Cigarette lighter 0044will pop out
automatically when the heating element is
red-hot. 12 V sockets
General notes X
Turn the SmartKey to position 1in the
ignition lock (Y page 171).
The sockets can be used for accessories with
a maximum draw of 180 W (15 A).
Accessories include such items as lamps or
chargers for mobile phones.
If you use the sockets for long periods when
the engine is switched off, the battery may
discharge.
i An emergency cut-out ensures that the
on-board voltage does not drop too low. If
the on-board voltage is too low, the power
to the sockets is automatically cut. This
ensures that there is sufficient power to
start the engine. Socket in the front-compartment center
console
X
To open: briefly press marking 0087.
Stowage compartment 0043opens.
X Lift up the cover of socket 0044.
X To close: press stowage compartment 0043
closed until it locks.
Socket in the rear compartment Vehicles with a rear bench seat or
electrically adjustable rear seats
Vehicles without a Rear Seat Entertainment
System
X
To open: briefly press cover 0044at the top.
The compartment opens.
X Lift up the cover of socket 0043.
X To close: press cover 0044closed until it
locks. 328
FeaturesStowage and features

X
Remove Start/Stop button from ignition
lock (Y page 171).
X Insert the SmartKey into the ignition lock.
X Switch on the ignition.
X Depress and hold the brake pedal.
X Shift to neutral N.
X Release the brake pedal.
X Release the electric parking brake, if
necessary.
X Switch off the ignition and leave the
SmartKey in the ignition lock.
You can wash the vehicle in an automatic car
wash from the very start.
If the vehicle is very dirty, pre-wash it before
cleaning it in an automatic car wash.
After using an automatic car wash, wipe off
wax from the windshield and the wiper
blades. This will prevent smears and reduce
wiping noises caused by residue on the
windshield.
Washing by hand In some countries, washing by hand is only
allowed at specially equipped washing bays.
Observe the legal requirements in each
country.
X Do not use hot water and do not wash the
vehicle in direct sunlight.
X Use a soft sponge to clean.
X Use a mild cleaning agent, such as a car
shampoo approved by Mercedes-Benz.
X Thoroughly hose down the vehicle with a
gentle jet of water.
X Do not point the water jet directly towards
the air inlet.
X Use plenty of water and rinse out the
sponge frequently.
X Rinse the vehicle with clean water and dry
thoroughly with a chamois.
X Do not let the cleaning agent dry on the
paintwork.
Carefully remove all deposits of road salt as
soon as possible when driving in winter. Power washers G
WARNING
The water jet from a circular jet nozzle (dirt
blasters) can cause invisible exterior damage
to the tires or chassis components.
Components damaged in this way may fail
unexpectedly. There is a risk of an accident.
Do not use power washers with circular jet
nozzles to clean the vehicle. Have damaged
tires or chassis components replaced
immediately.
! Always maintain a distance of at least
11.8 in (30 cm) between the vehicle and the
power washer nozzle. Information about
the correct distance is available from the
equipment manufacturer.
Move the power washer nozzle around
when cleaning your vehicle.
Do not aim directly at any of the following:
R tires
R door gaps, roof gaps, joints, etc.
R electrical components
R battery
R connectors
R lights
R seals
R trim
R ventilation slots
Damaged seals or electrical components
can lead to leaks or failures.
! If the key is within the rear detection
range of KEYLESS-GO, the following
situations, for example, could lead to the
unintentional opening of the trunk:
R using a car wash
R using a power washer
Make sure that the key is at least 6.5 ft
(2 m) away from the vehicle. Care
355Maintenance and care Z

G
WARNING
Electrostatic build-up can lead to the creation
of sparks, which could ignite the highly
explosive gases of a battery. There is a risk of
an explosion.
Before handling the battery, touch the vehicle
body to remove any existing electrostatic
build-up.
The highly flammable gas mixture forms when
charging the battery as well as when jump-
starting.
Always make sure that neither you nor the
battery is electrostatically charged. A build-
up of electrostatic charge can be caused, for
example:
R by wearing clothing made from synthetic
fibers
R due to friction between clothing and seats
R if you push or pull the battery across the
carpet or other synthetic materials
R if you wipe the battery with a cloth G
WARNING
During the charging process, a battery
produces hydrogen gas. If a short circuit
occurs or sparks are created, the hydrogen
gas can ignite. There is a risk of an explosion.
R Make sure that the positive terminal of a
connected battery does not come into
contact with vehicle parts.
R Never place metal objects or tools on a
battery.
R It is important that you observe the
described order of the battery terminals
when connecting and disconnecting a
battery.
R When jump-starting, make sure that the
battery poles with identical polarity are
connected.
R It is particularly important to observe the
described order when connecting and
disconnecting the jumper cables.
R Never connect or disconnect the battery
terminals while the engine is running. G
WARNING
Battery acid is caustic. There is a risk of injury.
Avoid contact with the skin, eyes or clothing.
Do not inhale any battery gases. Do not lean
over the battery. Keep children away from
batteries. Wash battery acid immediately with
water and seek medical attention. H
Environmental note Batteries contain dangerous
substances. It is against the
law to dispose of them with
the household rubbish. They
must be collected separately
and recycled to protect the
environment.
Dispose of batteries in an
environmentally friendly
manner. Take discharged
batteries to a qualified
specialist workshop or a
special collection point for
used batteries.
! Have the battery checked regularly at a
qualified specialist workshop.
Observe the service intervals in the
Maintenance Booklet or contact a qualified
specialist workshop for more information.
! You should have all work involving the
battery carried out at a qualified specialist
workshop. In the exceptional case that it is
necessary for you to disconnect the battery
yourself, make sure that:
R secure the vehicle to prevent it from
rolling away.
R you switch off the engine and remove the
SmartKey. Make sure the ignition is
switched off. Check that all the indicator
lamps in the instrument cluster are off.
Otherwise, electronic components, such
as the alternator, may be damaged.
R you first remove the negative terminal
clamp and then the positive terminal
clamp. Never swap the terminal clamps. 370
Battery (vehicle)Breakdown assistance